Erastus



E. C. LOUD.

. I Stove Grate.

Patented March 8, 1870.

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ERASTUS o. LOUD, OF'VSPRINGFIELD. MASSACHUSETTS.

Letters Patent N 100,536, dated Ma an 8,1870.

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The Schedule referred to in these Letters Patent and making part of the same.

tion'thereof, which will enable others skilled in the art to make and use the same, reference being bad to the accompanying drawings forming part of thisspecitication. a

Figure 1 represents a having my intprovetnent.

Figure 2 is a plan view of the same. 3 Similar letters of reference'indicate corresponding parts.

This invention has fonits object to so construct those stoves which have pivoted grates that the swinging sides of the grates will be opposite to concave surfaces, so that the grate can be considerably agitated to disturb the fuel, without danger of drop-. ping any coal into the ashbox, and without danger of wedgiug coal orcinders between the edge of the grate and the stove-frame.

A represents the body of a coal-stove, thickened at the center, and provided at that part with an inner concave, b. g

B. is a grate, which maybe of any form, but is preferably curved, and which is provided with jourvertical section of a stove nals a (1, located in bearings at the middle of the con cave b.

This concave is a curved surface, formed by the vibration of a setni-circumterence, slightly larger than that of the grate, in an arc of about-forty degrees; that is to say, about twenty degrees on each side of its stationary plane.

The proximity of this concave surface, at all points,

tothe perimeter of the grate should be very small.

The latter will therefore remain with its edges equidistant from the side of the stove as long as its motion does not exceed about twenty .degrees to either, side of the horizontal. Thereby a shaking of: the grate to the said extent is allowed, without getting anycoal or other matter between the'stove and grate, and when the grate is dumped andreadj usted, no difficulty from the same cause will be experienced.

The contiguous edges'of the grate may also be, but not necessarily, correspondingly convex, as shown.

Having thus described my invention,

I claim as new and desire to secure by Letters Patent-- about the middle of a concave, b, and vibrated therein, as and for the purpose specified.

Witnesses: E. C. LOUD.

G. R. TOWERSLEY, W. H. SMITH.

A grate, B, having journals 0 a, resting in bearings 

